1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71040533f6c19a3431e4b354618ff49e34fb65bc637e62355119e296092609cd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ee15293-081c-4652-b5e2-a43aa4b51719.json and https://artists.proofprofile.net/proofs/artist/1ee15293-081c-4652-b5e2-a43aa4b51719.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110f5bc6e7341d39d5b33b399b7e40ec3d45c9328c709a883b1e859a4dfe199b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZARB1834432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01655e9c417b5930dca30907e2913cd5d19f3ed9fd169b5bba860c2930d8d28. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZARB1842103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7b19ec4637e25b6e75488bb169c82f641eb04e78384326e6fd22f35780533d. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZCE61853777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3a1f0b3701c54a137e020aa391a616b0ae884d4e75b58325d103bcc0f86623. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZB4J1884848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbcb72ac9acf1f67401c1eb682eeb9c48d8e837413236c56b2d46f06ab0d684. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZB4J1884853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29a804dfde1535f19e23c37682d8ff5c8963e44a567310f398327c21da7f46c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM2PV1829036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec13023bfc206bd7c9283be4445e7761819dba4f16bed99f817f54d041b7ed4c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES61847026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a87ce0fe9db137c4fd19ba4e015058c498c224834ab7a2714068f84b46791b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES61847028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5080b2e4351b941d6e9a63a15f477eecad3ddc1ce83708d688eb931b80226b6c. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1969809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3d830751ec65bcb704fb8e5294f7bed22e4af04da779c6bdf8e9152a661095. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN71986798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcacc0132bedf631458b02484b285329051df1ee58572a1fb51557ad43c77195. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N1924761.
Boundless (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)
Boundless (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35c0c000542887b75d411d0dde982a7ff8ce6aa7752b61a744d882645d8966e. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2098846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1885d52e7463e25e0b49d30f617d29f3262362df23e12526c866fe641a376e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2107459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339e11ab4c7830cd3b2d6ea6e4f6d51e83d1e162392584a4aa23ec11cc4f70c3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2207100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea88d9b75e32ad42fb46ba467fd139a81ceea138fded3220d627fc9f1145656. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2173494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa581a6420eb97b3d0c73bc75980cb184a2dab65241fabf649aa77d48a67e9ece. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2154708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bf9f88cb9579c3e3331328d1372825fb56e705d097e3ff77560fc23f942a18. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2105056.